X-Git-Url: https://git.ao2.it/libam7xxx.git/blobdiff_plain/759559da7fb9c03e5f42eab12acbc01ebe763186..bc54402f45a199d3aba10c42b1ee9cf2b0197fa2:/src/am7xxx.c?ds=inline diff --git a/src/am7xxx.c b/src/am7xxx.c index 76b997c..3ba56f3 100644 --- a/src/am7xxx.c +++ b/src/am7xxx.c @@ -1,6 +1,6 @@ /* am7xxx - communication with AM7xxx based USB Pico Projectors and DPFs * - * Copyright (C) 2012 Antonio Ospite + * Copyright (C) 2012-2014 Antonio Ospite * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -26,6 +26,7 @@ #include "am7xxx.h" #include "serialize.h" +#include "tools.h" #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) @@ -33,7 +34,7 @@ * taken from: http://unixwiz.net/techtips/gnu-c-attributes.html) */ #ifndef __GNUC__ -# define __attribute__(x) /*NOTHING*/ +# define __attribute__(x) /* NOTHING */ #endif /* Control shared library symbols visibility */ @@ -79,7 +80,9 @@ struct am7xxx_usb_device_descriptor { }; static int default_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power); +static int picopix_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power); static int default_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom); +static int picopix_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom); #define DEFAULT_OPS { \ .set_power_mode = default_set_power_mode, \ @@ -125,6 +128,10 @@ static const struct am7xxx_usb_device_descriptor supported_devices[] = { .product_id = 0x0016, .configuration = 2, .interface_number = 0, + .ops = { + .set_power_mode = picopix_set_power_mode, + .set_zoom_mode = picopix_set_zoom_mode, + }, }, { .name = "Philips/Sagemcom PicoPix 2330", @@ -163,6 +170,11 @@ typedef enum { AM7XXX_PACKET_TYPE_IMAGE = 0x02, AM7XXX_PACKET_TYPE_POWER = 0x04, AM7XXX_PACKET_TYPE_ZOOM = 0x05, + AM7XXX_PACKET_TYPE_PICOPIX_POWER_LOW = 0x15, + AM7XXX_PACKET_TYPE_PICOPIX_POWER_MEDIUM = 0x16, + AM7XXX_PACKET_TYPE_PICOPIX_POWER_HIGH = 0x17, + AM7XXX_PACKET_TYPE_PICOPIX_ENABLE_TI = 0x18, + AM7XXX_PACKET_TYPE_PICOPIX_DISABLE_TI = 0x19, } am7xxx_packet_type; struct am7xxx_generic_header { @@ -373,8 +385,8 @@ static int read_data(am7xxx_device *dev, uint8_t *buffer, unsigned int len) ret = libusb_bulk_transfer(dev->usb_device, 0x81, buffer, len, &transferred, 0); if (ret != 0 || (unsigned int)transferred != len) { - error(dev->ctx, "ret: %d\ttransferred: %d (expected %u)\n", - ret, transferred, len); + error(dev->ctx, "%s. Transferred: %d (expected %u)\n", + libusb_error_name(ret), transferred, len); return ret; } @@ -392,8 +404,8 @@ static int send_data(am7xxx_device *dev, uint8_t *buffer, unsigned int len) ret = libusb_bulk_transfer(dev->usb_device, 0x1, buffer, len, &transferred, 0); if (ret != 0 || (unsigned int)transferred != len) { - error(dev->ctx, "ret: %d\ttransferred: %d (expected %u)\n", - ret, transferred, len); + error(dev->ctx, "%s. Transferred: %d (expected %u)\n", + libusb_error_name(ret), transferred, len); return ret; } @@ -477,8 +489,8 @@ static int send_data_async(am7xxx_device *dev, uint8_t *buffer, unsigned int len /* Make a copy of the buffer so the caller can safely reuse it just * after libusb_submit_transfer() has returned. This technique - * requires more allocations than a proper double-buffering approach - * but it takes a lot less code. */ + * requires more dynamic allocations compared to a proper + * double-buffering approach but it takes a lot less code. */ transfer_buffer = malloc(len); if (transfer_buffer == NULL) { error(dev->ctx, "cannot allocate transfer buffer (%s)\n", @@ -690,6 +702,109 @@ static am7xxx_device *find_device(am7xxx_context *ctx, return current; } +static int open_device(am7xxx_context *ctx, + unsigned int device_index, + libusb_device *usb_dev, + am7xxx_device **dev) +{ + int ret; + int current_configuration; + + *dev = find_device(ctx, device_index); + if (*dev == NULL) { + ret = -ENODEV; + goto out; + } + + /* the usb device has already been opened */ + if ((*dev)->usb_device) { + debug(ctx, "(*dev)->usb_device already set\n"); + ret = 1; + goto out; + } + + ret = libusb_open(usb_dev, &((*dev)->usb_device)); + if (ret < 0) { + debug(ctx, "libusb_open failed: %s\n", libusb_error_name(ret)); + goto out; + } + + /* XXX, the device is now open, if any of the calls below fail we need + * to close it again before bailing out. + */ + + current_configuration = -1; + ret = libusb_get_configuration((*dev)->usb_device, + ¤t_configuration); + if (ret < 0) { + debug(ctx, "libusb_get_configuration failed: %s\n", + libusb_error_name(ret)); + goto out_libusb_close; + } + + if (current_configuration != (*dev)->desc->configuration) { + /* + * In principle kernel drivers bound to each interface should + * be detached before setting the configuration, but in + * practice this is not necessary for most devices. + * + * For example something like the following function would be + * called: + * libusb_detach_all_kernel_drivers((*dev)->usb_device); + */ + ret = libusb_set_configuration((*dev)->usb_device, + (*dev)->desc->configuration); + if (ret < 0) { + debug(ctx, "libusb_set_configuration failed: %s\n", + libusb_error_name(ret)); + debug(ctx, "Cannot set configuration %hhu\n", + (*dev)->desc->configuration); + goto out_libusb_close; + } + } + + libusb_set_auto_detach_kernel_driver((*dev)->usb_device, 1); + + ret = libusb_claim_interface((*dev)->usb_device, + (*dev)->desc->interface_number); + if (ret < 0) { + debug(ctx, "libusb_claim_interface failed: %s\n", + libusb_error_name(ret)); + debug(ctx, "Cannot claim interface %hhu\n", + (*dev)->desc->interface_number); + goto out_libusb_close; + } + + /* Checking that the configuration has not changed, as suggested in + * http://libusb.sourceforge.net/api-1.0/caveats.html + */ + current_configuration = -1; + ret = libusb_get_configuration((*dev)->usb_device, + ¤t_configuration); + if (ret < 0) { + debug(ctx, "libusb_get_configuration after claim failed: %s\n", + libusb_error_name(ret)); + goto out_libusb_release_interface; + } + + if (current_configuration != (*dev)->desc->configuration) { + debug(ctx, "libusb configuration changed (expected: %hhu, current: %hhu\n", + (*dev)->desc->configuration, current_configuration); + ret = -EINVAL; + goto out_libusb_release_interface; + } +out: + return ret; + +out_libusb_release_interface: + libusb_release_interface((*dev)->usb_device, + (*dev)->desc->interface_number); +out_libusb_close: + libusb_close((*dev)->usb_device); + (*dev)->usb_device = NULL; + return ret; +} + typedef enum { SCAN_OP_BUILD_DEVLIST, SCAN_OP_OPEN_DEVICE, @@ -699,13 +814,14 @@ typedef enum { * This is where the central logic of multi-device support is. * * When 'op' == SCAN_OP_BUILD_DEVLIST the parameters 'open_device_index' and - * 'dev' are ignored; the function returns 0 on success and a negative value + * 'dev' are ignored; the function returns 0 on success or a negative value * on error. * * When 'op' == SCAN_OP_OPEN_DEVICE the function opens the supported USB * device with index 'open_device_index' and returns the correspondent - * am7xxx_device in the 'dev' parameter; the function returns 0 on success, - * 1 if the device was already open and a negative value on error. + * am7xxx_device in the 'dev' parameter; the function returns the value from + * open_device(), which is 0 on success, 1 if the device was already open or + * a negative value on error. * * NOTES: * if scan_devices() fails when called with 'op' == SCAN_OP_BUILD_DEVLIST, @@ -716,7 +832,7 @@ static int scan_devices(am7xxx_context *ctx, scan_op op, unsigned int open_device_index, am7xxx_device **dev) { ssize_t num_devices; - libusb_device** list; + libusb_device **list; unsigned int current_index; int i; int ret; @@ -768,51 +884,16 @@ static int scan_devices(am7xxx_context *ctx, scan_op op, } else if (op == SCAN_OP_OPEN_DEVICE && current_index == open_device_index) { - *dev = find_device(ctx, open_device_index); - if (*dev == NULL) { - ret = -ENODEV; - goto out; - } - - /* the usb device has already been opened */ - if ((*dev)->usb_device) { - debug(ctx, "(*dev)->usb_device already set\n"); - ret = 1; - goto out; - } - - ret = libusb_open(list[i], &((*dev)->usb_device)); - if (ret < 0) { - debug(ctx, "libusb_open failed\n"); - goto out; - } - - /* XXX, the device is now open, if any - * of the calls below fail we need to - * close it again before bailing out. - */ - - ret = libusb_set_configuration((*dev)->usb_device, - (*dev)->desc->configuration); - if (ret < 0) { - debug(ctx, "libusb_set_configuration failed\n"); - debug(ctx, "Cannot set configuration %hhu\n", - (*dev)->desc->configuration); - goto out_libusb_close; - } - - ret = libusb_claim_interface((*dev)->usb_device, - (*dev)->desc->interface_number); - if (ret < 0) { - debug(ctx, "libusb_claim_interface failed\n"); - debug(ctx, "Cannot claim interface %hhu\n", - (*dev)->desc->interface_number); -out_libusb_close: - libusb_close((*dev)->usb_device); - (*dev)->usb_device = NULL; - goto out; - } + ret = open_device(ctx, + open_device_index, + list[i], + dev); + if (ret < 0) + debug(ctx, "open_device failed\n"); + /* exit the loop unconditionally after + * attempting to open the device + * requested by the user */ goto out; } current_index++; @@ -820,7 +901,8 @@ out_libusb_close: } } - /* if we made it up to here we didn't find any device to open */ + /* if we made it up to here when op == SCAN_OP_OPEN_DEVICE, + * no devices to open had been found. */ if (op == SCAN_OP_OPEN_DEVICE) { error(ctx, "Cannot find any device to open\n"); ret = -ENODEV; @@ -890,6 +972,26 @@ static int default_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power) return 0; } +static int picopix_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power) +{ + switch(power) { + case AM7XXX_POWER_LOW: + return send_command(dev, AM7XXX_PACKET_TYPE_PICOPIX_POWER_LOW); + + case AM7XXX_POWER_MIDDLE: + return send_command(dev, AM7XXX_PACKET_TYPE_PICOPIX_POWER_MEDIUM); + + case AM7XXX_POWER_HIGH: + return send_command(dev, AM7XXX_PACKET_TYPE_PICOPIX_POWER_HIGH); + + case AM7XXX_POWER_OFF: + case AM7XXX_POWER_TURBO: + default: + error(dev->ctx, "Unsupported power mode.\n"); + return -EINVAL; + }; +} + static int default_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom) { int ret; @@ -922,6 +1024,7 @@ static int default_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom) h.header_data.zoom.bit0 = 1; break; + case AM7XXX_ZOOM_TELE: default: error(dev->ctx, "Unsupported zoom mode.\n"); return -EINVAL; @@ -934,6 +1037,41 @@ static int default_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom) return 0; } +static int picopix_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom) +{ + int ret; + am7xxx_packet_type packet_type; + + switch(zoom) { + case AM7XXX_ZOOM_ORIGINAL: + packet_type = AM7XXX_PACKET_TYPE_PICOPIX_DISABLE_TI; + break; + + case AM7XXX_ZOOM_TELE: + packet_type = AM7XXX_PACKET_TYPE_PICOPIX_ENABLE_TI; + break; + + case AM7XXX_ZOOM_H: + case AM7XXX_ZOOM_H_V: + case AM7XXX_ZOOM_TEST: + default: + error(dev->ctx, "Unsupported zoom mode.\n"); + return -EINVAL; + }; + + ret = send_command(dev, packet_type); + if (ret < 0) + return ret; + + /* The Windows drivers wait for 100ms and send the same command again, + * probably to overcome a firmware deficiency */ + ret = msleep(100); + if (ret < 0) + return ret; + + return send_command(dev, packet_type); +} + /* Public API */ AM7XXX_PUBLIC int am7xxx_init(am7xxx_context **ctx) @@ -1060,7 +1198,7 @@ AM7XXX_PUBLIC int am7xxx_get_device_info(am7xxx_device *dev, am7xxx_device_info *device_info) { int ret; - struct am7xxx_header h = { 0 }; + struct am7xxx_header h; if (dev->device_info) { memcpy(device_info, dev->device_info, sizeof(*device_info)); @@ -1071,6 +1209,7 @@ AM7XXX_PUBLIC int am7xxx_get_device_info(am7xxx_device *dev, if (ret < 0) return ret; + memset(&h, 0, sizeof(h)); ret = read_header(dev, &h); if (ret < 0) return ret;